Incandescent-lamp socket.



No. 845,542. PATENTED FEB. 26, 1907.

` G. W. GOODRIDGE.

'INCANDESCENT LAMP SOGKET.-

APlLIATION FILED MAY 17. 1906.

wlwsssss INV NTQR ATTOKN EYS instead of a pipe.

lUNITED STATES PATENT OFFICE.

crLBERT W. COODRIDCE, OF BRIDCEPORT, CONNECTICUT, AssieNORTo THE BRYANTELECTRIC COMPANY, or BRIDCEPORT, CONNECTrmwY A CORPORATION OFCONNECTICUT.

ENCANDESCENT-LAMP SOCK-ET.,

Specification of Letters Patent.

Patented Feb. 2e, 190'?.`

' Application led May 17, 1906. Serial No. 317,385.

fore employed for securing aupipe or bushing in the cap-nipple.

In the accompanying drawings,` Figure 1 is a' side elevation of a capembo( ying my invention. Fig. 2 is a side elevation of the same, showingthe additional feature of a binding-ring. Fig. 3 isa side elevation asin Fig. l, adapted tol receive a screw-bushing Fig. 4 is a sectionalview of Fig. 2. Fig. 5 is a side view of the ca in another form. Fig. 6is a cross-section o the same, and Fig. 7 is aside view of a cap Withoutpipe or bushing.

Referring to the drawings, the nipple A of the cap is preferably firsttapped to receive the threaded end of a pipe c or ascreW-bushing f. Thenip )le is then cut vertically'in a series of radial slitsaand thefingers so formed conically com ressed, as shown in Fig. 7, so as torender di diameter than that of the pipe or bushing nipple may beprovided .with an external annular groove d, into whichdits asprngringle,

e mouth of the nipple of less which as the fprilpe enters eiiectuallyclutches or binds the gers against the same. This result is attainedstill more eifectualhT if the pipe or bushing tapers slightly in itsthreaded portion, thus acting as a Wedge as it enters and is clamped bythe binding-ring. For the spring-ring may be substituted a conicalbinding-ring g, as shown in Figs. 5 and 6, which 1s of suicientthickness at its smaller end to permit of its being ta pcd to lreceivethe pipe or bushing. When tlliis conical rin is'used, the nipple shouldnot be provide with the annular groove. As the pi e or bushing enters,the lingers of the nipp e are prevented from spreading by the conicalring, as in the case of the binding-ring iirst dscribed.

I claim as my invention- 1. A cap for incandescent-lamp sockets and thelike, having a slitted neck threaded on its inner face as and for thepurpose described.

2. A cap for incandescent-lamp sockets and the like, having a slittedneck threaded on its inner face and means to prevent the vsegments o1the neck from spreading.

3. A cap for incandescent-lamp sockets and the like, having a slittedneck threaded on its inner face, and provided on its outer face with abinding-ring.

4. A cap for incandescent-lamp sockets and the like, having a slittedneck threaded on its inner face and provided on its outer face withv anannular groove, in combination with a' bindin -ring fit ted therein.

,5. A cap For incandescent-lamp sockets and the like, havin a slittedneck threaded \on its inner face an conically compressed as and for thepurpose described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GILBERT W. GOODRIDGE.

